Sarnia vs Gaithersburg

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Sarnia is a city in Southwestern Ontario, Canada, with a 2016 population of 71,594. It is the largest city on Lake Huron and in Lambton County. Sarnia is located on the eastern bank of the junction between the Upper and Lower Great Lakes where Lake Huron flows into the St. Clair River, which forms the Canada–United States border, directly across from Port Huron, Michigan. The site's natural harbour first attracted the French explorer La Salle. He named the site "The Rapids" on 23 August 1679, when he had horses and men pull his 45-ton barque Le Griffon north against the nearly four-knot current of the St. Clair River.This was the first time that a vessel other than a canoe or other oar-powered vessel had sailed into Lake Huron, and La Salle's voyage was germinal in the development of commercial shipping on the Great Lakes. Located in the natural harbour, the Sarnia port remains an important centre for lake freighters and oceangoing ships carrying cargoes of grain and petroleum products. The natural port and the salt caverns that exist in the surrounding areas, together with the oil discovered in nearby Oil Springs in 1858, led to the dramatic growth of the petroleum industry in this area.

Because Oil Springs was the first place in Canada and North America to drill commercially for oil, the knowledge that was acquired there resulted in oil drillers from Sarnia travelling the world teaching other enterprises and nations how to drill for oil.The complex of refining and chemical companies is called Chemical Valley and located south of downtown Sarnia. In 2011 the city had the highest level of particulates air pollution of any Canadian city, but it has since dropped to rank 30th in this hazard. About 60 percent of the particulate matter comes from industries and polluters in the neighbouring United States.Lake Huron is cooler than the air in summer and warmer than the air in winter; therefore, it moderates Sarnia's humid continental climate, making temperature extremes of hot and cold less evident. In the winter, Sarnia occasionally experiences lake-effect snow from Arctic air blowing across the warmer waters of Lake Huron and condensing to form snow squalls over land.

Source: Wikipedia

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Gaithersburg ( pronunciation ), officially the City of Gaithersburg, is a city in Montgomery County, Maryland, United States. At the time of the 2010 U.S. Census, Gaithersburg had a population of 59,933, making it the fourth-largest incorporated city in the state, behind Baltimore, Frederick, and Rockville. Gaithersburg is located to the northwest of Washington, and is considered a suburb and a primary city within the Washington–Arlington–Alexandria, DC–VA–MD–WV Metropolitan Statistical Area. Gaithersburg was incorporated as a town in 1878 and as a city in 1968. Gaithersburg is divided into east and west sections, separated by Interstate 270. The eastern section of the city is older and is the original portion of the town before more recent growth. Landmarks and buildings from that time can still be seen in many places but especially in the historic central business district of Gaithersburg called "Olde Towne". The east side also includes Lakeforest Mall, City Hall, and the Montgomery County Fair grounds, and Bohrer Park (a well-known joint community recreation center and outdoor water park for kids and families). The west side of the city has many wealthier neighborhoods that were designed with smart growth techniques and embrace New Urbanism. These include the award-winning Kentlands community, the Lakelands community, and the Washingtonian Center (better known as Rio), a popular shopping/business district.

Consumers often come to this area during Black Friday and other shopping holidays for the deals and variety of huge brand name stores like Target and Dick's Sporting Goods, and smaller stores like Francesca's and Blue Mercury. Two New Urbanism communities are under construction, including Watkins Mill Town Center (Casey East and West), and the massive "Science City". The state has a bus rapid transit line, Corridor Cities Transitway or "CCT", planned for the western portion of the city starting at Shady Grove Metro Station and connecting all the high density western Gaithersburg neighborhoods with a total of eight stops planned in the city. The National Institute of Standards and Technology (NIST) is headquartered in Gaithersburg directly west of I-270. Other major employers in the city include IBM, Lockheed Martin Information Systems and Global Services business area headquarters, AstraZeneca, and the French multinational corporation, Sodexo. Gaithersburg is also the location of the garrison of the United States Army Reserve Legal Command. Gaithersburg is noted for its ethnic and economic diversity; WalletHub in 2016 ranked it first among the 313 largest U.S. cities for ethnic diversity and second for social class diversity.

Source: Wikipedia